Merge branch 'linus' into perfcounters/core-v2

Merge reason: we have gathered quite a few conflicts, need to merge upstream

Conflicts:
	arch/powerpc/kernel/Makefile
	arch/x86/ia32/ia32entry.S
	arch/x86/include/asm/hardirq.h
	arch/x86/include/asm/unistd_32.h
	arch/x86/include/asm/unistd_64.h
	arch/x86/kernel/cpu/common.c
	arch/x86/kernel/irq.c
	arch/x86/kernel/syscall_table_32.S
	arch/x86/mm/iomap_32.c
	include/linux/sched.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 93 insertions, 95 deletions

diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 132a134d12f2..cea7b74963e9 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -7,6 +7,8 @@
  */
 
 #include <linux/scatterlist.h>
+#include <linux/dma-debug.h>
+#include <linux/dma-attrs.h>
 #include <asm/io.h>
 #include <asm/swiotlb.h>
 #include <asm-generic/dma-coherent.h>
@@ -16,47 +18,9 @@ extern int iommu_merge;
 extern struct device x86_dma_fallback_dev;
 extern int panic_on_overflow;
 
-struct dma_mapping_ops {
-	int             (*mapping_error)(struct device *dev,
-					 dma_addr_t dma_addr);
-	void*           (*alloc_coherent)(struct device *dev, size_t size,
-				dma_addr_t *dma_handle, gfp_t gfp);
-	void            (*free_coherent)(struct device *dev, size_t size,
-				void *vaddr, dma_addr_t dma_handle);
-	dma_addr_t      (*map_single)(struct device *hwdev, phys_addr_t ptr,
-				size_t size, int direction);
-	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
-				size_t size, int direction);
-	void            (*sync_single_for_cpu)(struct device *hwdev,
-				dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_for_device)(struct device *hwdev,
-				dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_range_for_cpu)(struct device *hwdev,
-				dma_addr_t dma_handle, unsigned long offset,
-				size_t size, int direction);
-	void            (*sync_single_range_for_device)(struct device *hwdev,
-				dma_addr_t dma_handle, unsigned long offset,
-				size_t size, int direction);
-	void            (*sync_sg_for_cpu)(struct device *hwdev,
-				struct scatterlist *sg, int nelems,
-				int direction);
-	void            (*sync_sg_for_device)(struct device *hwdev,
-				struct scatterlist *sg, int nelems,
-				int direction);
-	int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
-				int nents, int direction);
-	void            (*unmap_sg)(struct device *hwdev,
-				struct scatterlist *sg, int nents,
-				int direction);
-	int             (*dma_supported)(struct device *hwdev, u64 mask);
-	int		is_phys;
-};
-
-extern struct dma_mapping_ops *dma_ops;
-
-static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
+extern struct dma_map_ops *dma_ops;
+
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 {
 #ifdef CONFIG_X86_32
 	return dma_ops;
@@ -71,7 +35,7 @@ static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
 /* Make sure we keep the same behaviour */
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 	if (ops->mapping_error)
 		return ops->mapping_error(dev, dma_addr);
 
@@ -90,137 +54,167 @@ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 
 static inline dma_addr_t
 dma_map_single(struct device *hwdev, void *ptr, size_t size,
-	       int direction)
+	       enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
-
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
+	dma_addr_t addr;
+
+	BUG_ON(!valid_dma_direction(dir));
+	addr = ops->map_page(hwdev, virt_to_page(ptr),
+			     (unsigned long)ptr & ~PAGE_MASK, size,
+			     dir, NULL);
+	debug_dma_map_page(hwdev, virt_to_page(ptr),
+			   (unsigned long)ptr & ~PAGE_MASK, size,
+			   dir, addr, true);
+	return addr;
 }
 
 static inline void
 dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
-		 int direction)
+		 enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 
-	BUG_ON(!valid_dma_direction(direction));
-	if (ops->unmap_single)
-		ops->unmap_single(dev, addr, size, direction);
+	BUG_ON(!valid_dma_direction(dir));
+	if (ops->unmap_page)
+		ops->unmap_page(dev, addr, size, dir, NULL);
+	debug_dma_unmap_page(dev, addr, size, dir, true);
 }
 
 static inline int
 dma_map_sg(struct device *hwdev, struct scatterlist *sg,
-	   int nents, int direction)
+	   int nents, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
+	int ents;
+
+	BUG_ON(!valid_dma_direction(dir));
+	ents = ops->map_sg(hwdev, sg, nents, dir, NULL);
+	debug_dma_map_sg(hwdev, sg, nents, ents, dir);
 
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_sg(hwdev, sg, nents, direction);
+	return ents;
 }
 
 static inline void
 dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
-	     int direction)
+	     enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
+	debug_dma_unmap_sg(hwdev, sg, nents, dir);
 	if (ops->unmap_sg)
-		ops->unmap_sg(hwdev, sg, nents, direction);
+		ops->unmap_sg(hwdev, sg, nents, dir, NULL);
 }
 
 static inline void
 dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			size_t size, int direction)
+			size_t size, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_for_cpu)
-		ops->sync_single_for_cpu(hwdev, dma_handle, size, direction);
+		ops->sync_single_for_cpu(hwdev, dma_handle, size, dir);
+	debug_dma_sync_single_for_cpu(hwdev, dma_handle, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
-			   size_t size, int direction)
+			   size_t size, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_for_device)
-		ops->sync_single_for_device(hwdev, dma_handle, size, direction);
+		ops->sync_single_for_device(hwdev, dma_handle, size, dir);
+	debug_dma_sync_single_for_device(hwdev, dma_handle, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			      unsigned long offset, size_t size, int direction)
+			      unsigned long offset, size_t size,
+			      enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_range_for_cpu)
 		ops->sync_single_range_for_cpu(hwdev, dma_handle, offset,
-					       size, direction);
+					       size, dir);
+	debug_dma_sync_single_range_for_cpu(hwdev, dma_handle,
+					    offset, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
 				 unsigned long offset, size_t size,
-				 int direction)
+				 enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_range_for_device)
 		ops->sync_single_range_for_device(hwdev, dma_handle,
-						  offset, size, direction);
+						  offset, size, dir);
+	debug_dma_sync_single_range_for_device(hwdev, dma_handle,
+					       offset, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
-		    int nelems, int direction)
+		    int nelems, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_sg_for_cpu)
-		ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
+		ops->sync_sg_for_cpu(hwdev, sg, nelems, dir);
+	debug_dma_sync_sg_for_cpu(hwdev, sg, nelems, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
-		       int nelems, int direction)
+		       int nelems, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_sg_for_device)
-		ops->sync_sg_for_device(hwdev, sg, nelems, direction);
+		ops->sync_sg_for_device(hwdev, sg, nelems, dir);
+	debug_dma_sync_sg_for_device(hwdev, sg, nelems, dir);
 
 	flush_write_buffers();
 }
 
 static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
 				      size_t offset, size_t size,
-				      int direction)
+				      enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
+	dma_addr_t addr;
 
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_single(dev, page_to_phys(page) + offset,
-			       size, direction);
+	BUG_ON(!valid_dma_direction(dir));
+	addr = ops->map_page(dev, page, offset, size, dir, NULL);
+	debug_dma_map_page(dev, page, offset, size, dir, addr, false);
+
+	return addr;
 }
 
 static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
-				  size_t size, int direction)
+				  size_t size, enum dma_data_direction dir)
 {
-	dma_unmap_single(dev, addr, size, direction);
+	struct dma_map_ops *ops = get_dma_ops(dev);
+
+	BUG_ON(!valid_dma_direction(dir));
+	if (ops->unmap_page)
+		ops->unmap_page(dev, addr, size, dir, NULL);
+	debug_dma_unmap_page(dev, addr, size, dir, false);
 }
 
 static inline void
@@ -266,7 +260,7 @@ static inline void *
 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
 		gfp_t gfp)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 	void *memory;
 
 	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
@@ -285,20 +279,24 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
 	if (!ops->alloc_coherent)
 		return NULL;
 
-	return ops->alloc_coherent(dev, size, dma_handle,
-				   dma_alloc_coherent_gfp_flags(dev, gfp));
+	memory = ops->alloc_coherent(dev, size, dma_handle,
+				     dma_alloc_coherent_gfp_flags(dev, gfp));
+	debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
+
+	return memory;
 }
 
 static inline void dma_free_coherent(struct device *dev, size_t size,
 				     void *vaddr, dma_addr_t bus)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 
 	WARN_ON(irqs_disabled());       /* for portability */
 
 	if (dma_release_from_coherent(dev, get_order(size), vaddr))
 		return;
 
+	debug_dma_free_coherent(dev, size, vaddr, bus);
 	if (ops->free_coherent)
 		ops->free_coherent(dev, size, vaddr, bus);
 }